====REISSUE====
For Reissue
* parent_doc_status (varchar(255)) status of the parent document. It is unclear whether this refers to a parent reissue application (if there happen to be multiple applications relating to the reissue of this patent) or the patent for whom the reissue is being reissued. This goes for all fields beginning "parent_doc"
* parent_doc_number (int) number for the parent document